Ventilator.



E. DI4 CHADWIGK.

VENTILATOR. v APPLIUATION r1LBD APR.za, 1906. l

` PatentedMar. 1, 1910.

z SHEETS-SHEET 2.

To all whom it 'may concern.' I Be it known that I, EvnREi-'T D. Crum'wrox, acitizen. of the United States, resi- UivrrED sjrATEs ParamOFFICE,

.EVERETT D. CHADWICK, F WINCHESTER, yTMASVSACHU'SE'JHS.

VENTILATOR.

' Application led April'ZS, 1906. Serial No. 313,126:

' dent at Winchester,` in the county Yof'Midd-lfesex and State ofMassachusetts, have inlvented' certain new and useful Improve- 1ments-in Ventilators, ofwhich the isa specification. y In manylocalities it is requiredby statute or munici al ordinance that everyltheater or other pi) with'a ventilator orshutterada ted to,

opened automatically or vI nanua y incase of lire, soias gto provide lan.outlet for /moke and flames and create a'draftsui' enty` to carry thesaine away from thev auditorium:y It

4 is desirable that such ventilators shall be of fire-proofconstruction, that, they shall open outward, and that when-openttle/shall pr() vide an unobstructed outlet ,equa in area to' at leastone-tenth of the/area o'f the stage iioor,-and my invention/isl intendedto pro-l vide a simple and practical ventilator which will satisfytheabove conditions vand which.

may'also be arranged lto open automatically in case of fire as well asto be manually operated fromyany one ofA a number of dider- .ent vpointson' the 'stageorelsewhere In the accompanying.drawingaFiglu-e l isa sideelevation of a closed ventilator em- .bodyn my improvementsin theirpreferred form i 2 is a similar view with the shutters on t e rear sideof the ventilator re- -inoved and showin the roof in section; Fig.

3 is a plan view o the frame with the roof removed, showing also aportion of two shu'ttersv aton'corner of the structure. In these threefigures the ventilator is represented as contracted in the direction ofits length. Fig. 4 is a sectional detail view illustrating therconnections between the shutters of my ventilator nd the releasingdevices; Fig. 5

is a detail view on -a larger scale, showingthe base of the ventilatorand the manner in which it is mounted on a roof; Fig. 6 is a sectionalview illustrating a detail of roof construction. y

The frame of my ventilator is preferably made of angle iron, andconsists at its top4 y of horizontal side and end angle bars 2 and 3made in as many lengths as may be convenient and bolted together' and toupright -angle bars 4 'and 5, the bars 4 being located at the corners ofthe structure and the barsY` Specification of Letters Patent.

following ace of public assemblage haw y'ing a stage shall be provided,over the sta e,

Patent-eu Mar. 1, 1910.

5 at as many other points as may be neceslsary for strength andstiffness. According .to the specific `arrangement illustrated, the endof -the horizontal bars 2' and 3 are mitered where they meet and arebolted to the inner faces of the vertical angle bars 4 and 5, as shownin Fig. 3,' so that the an 'les of the latter point outward. Near theirower ends said bars 4 and 5-are bolted to and connected by' a base board46 extending entirely 'around the structure, to lwhich base-boardtheshutters are hinged as hereinafter described, and on the top of theframework is' su ed aflat roof which is usuallygiven as ight pitchsuticient to shed water easily, the'u right bars being proportioned toac comp ish this result. The roof and the baseboard are preferably madeof standard fire l vproof shutter construction, that is to sayof wood.or planking completely covered and inclosed by sheets of tm withinterlocked.- edges and preferably the roof is made in a suitable,number of sections 7 which are Arabbeted as at 8,A Fig. 2, thevoverlapping Aedge of each section beingbolted to an angle iron crossbrace 9, as shown.

A, The space between 'the base board and the roof, around the peripheryof the structure,

provides the ',outlet lor Ventilating l'iassages.

and is proportioned to have -the required area accordlng to the area ofthe stage over which the ventllator 1s vto be used, and

for closing these pass-ages, each shutterbeing hinged at its lower edgeto the upper ed e ofzthe ba-scboard 6 and having such hewht that whenclosed it will just pass in ,under the projecting edge of the roof andabut `aoiainstA the framing. edges of adjacent shutters at each cornerof the structure are preferably beveled, 'as shown at 1l in Figf, sothatwhen the shutters are closed these edges fit together over thevertical, angle iron bar 4 atthel corre` Asponding corner. At other"points theedjacent vertical edgesof the shutters' are arranged to comeover the flat outer faces of a pair of thefintermediate uprights 5. Ineither case the entrance of rain is effectively revented, since any rainwhich is driven between the adjacentedges of the shutterswill beintercepted "by the corresponding uprights and will run down the saineand out over thebase board. To the same end the upper edge of the base'board is a v suitable number of shutters l0 are provided Y The meetingthence outward under the shutter.

preferably `rabbeted on its outer side, as shown in 12, Fig. 5, thelowe'ends of the shutters being set into this rabbet, so that any Waterwhich runs downthe inner face of a shutter will flow into the rabbetAandfurther precaution against the `entrance of rain under the overhangingedge of the roof,

especially on the highest side'of the latter, I prefer to face the underedge ofthe roof all the way around with a strip of wood 13 having a clapoutermost.

board, and having its thicker 'edge This stripforms a part of the roofand is covered by the. tin when the roofv` is made, thus giving theunderside ofthe latter enough of a pitch outward at its yedges to' preventAwater from running inward along the same, -V

The parts above described are detachably bolted-together, by preference,and 'hence lthey may be constructed in sections andso transported to theplace of assemblage, where they can be setup without ditliculty. Insetting up the structure, after acsuitable opening has been made in theroof avledge l14, Fig. 5, is built up around' this opening to sucha'height as to present a horizontal base for the ventilator', and thelatterv is then mounted'upon this base with the lower ends of theuprights f1 and 5 projectingdown- Ward inside of the base and with 'thebase' board resting u onI it, whereupon said uprights are holte to thebase and thelatter is connected to the roof by a flashing or any otherIsuitable water-'tight connection. The meetin edges of the roof' sections7, are

, prcfera ly made weather proof by covering .them with a strip of tin15, Fig. 2, which is n soldered thereto.

It will-be seen that when the structure` vabove described is set up,each shutter will be capable of opening outward independently of any ofthe others'byturning on the' hinges at its-lower edge, and-,for cbn'trolling the opening of these shutter-s andv closing the same as desiredI provide each shutter with a -rope ljsecured'theretn near' its upper`edge and passed over a pulleyfa't tached to. the under side of the roof,said rope being led thence to any convenient lpoint where it may be'detachabl secured. In practice, I prefer to secure eac of these ropesto a release box 18 sogconstructed that said rope may either be manuallyattached to 'or detached therefrom, or electrically released from one ormore distant points. rn`

electric circuit running from the release box 18 is shown in Figi,whiclrcircuit includes a. battery 19 and one lor more push buttons ormanual switches 20, and it will be understood that all the release boxesmav be ineluded in the same circuitfso that the shut- ,ters may all bereleased simultaneously. y A

release box suitable for this purpose lsdea wedge-shape in crosssection, like,

scribed and claimed vin my' applicatioirfor a patent tiled on the 8thday of October, 1906, ferial No. 337,902 and is not specificallydescribed herein, as the particular construe` tion of such device is notmaterial to the present invention. f,

ing of each shutter when released, I prefer vto employthe mechanismillustrated in lFig. 2,-'in which 21 represents'an elbow lever pivotedat its angle to the inner yface of oneo to the roofof the structure.- vThe other arm of, Said lever carries a weight l24, and the parts .are,so` roport-ioned that when the shutter is; close the roller 22 is atthe upper of Vthe lever is in horizontal losition or otherwiselocate'dto cause the ro er to press against itsltrack.l Whenthe ropewhich controls said shutter-is released the effect of ward, owin to thefxity ofv thel track 23, and as sai shutter opens the wei htdedowntodthe lower portion otits track. The `opening 'of the shutter may-belimited by any suitable means su'ch as one or more nor- .mally-slackstop ropes 25 secured at one end 22 will not run off its track."r When ashutter is closed vby pulling o y'its rope 16, its

elevatesthe weight 24 to th "tion shown inFig. 2. As im alternativemeans for causing" the o )ening of the shutter, a weighted arm 26, lFig.4, may be rigidly secured to the outside of the shutter, but

cause it can be made to o 'crate more ovvertherweather, kleavingtheeziterior of the ventilator free from (projecting parts when theshutters are close shutters entirely automatic incase of fire, each ofthe ro es 16 ma 1be provided with construction, and it will'benoted-thatsince each shutter .and its' operating parts are 1n dependent-p`f all vthe others, .so ,'far as their operation is concerned, therewill be pracof the shutters in case of fire, even though interferedwith. is one of thel features of mit the described' tent for Ventilatingpurposes, without in any lway atectin lthejothei shutters or interekfermg with t readiness 'ofl the entire `series fully'andis also rotectefrom the e ectof i' tical certainty of the opening of at least oneV theoperation of the parts should belin somel In order to eifecttheinstantaneous open.

the shutters 10 and provided at. the free end of its uppermost arm witha roller-.22 adaptf ed to run on a fixed -vertical track23 secured endof'the trackf23andtheweighted arm the weight 24C isv to LAforce 'theshutter out-V A `9ct scends and the roller v22 simultaneous y runs `tothe shutter and attheJ dther end to the roof, and should be solimite'dthat the rollerA v I prefer the construction first described,

In order to render the opening 'of the y u suitable num er of fusi lelinks'27 of usual construction that any desired number ofthe shuttersmaybe opened to any desired ex;

the opening of any shutter to a variable extent.

2. A ventilator comprising a training providing side openings, a roofcovering the saine, aseries ot outWardly-opening shutters hinged at4their edges and adapted collectively to close said openings, means foropening said shutters independently of each other, flexible connectionscontrolling the opening ot" said shutters, and means for de tachabl ysecuring said connections.

3. 1n a ventilator, the combination with a 'framing of a shutter hingedthereto, leasable means tor holding said shutter against openingmovement, and inea-ns for opening said shutter when released, compiisinga lever having a bearing at one end on the inside of the shutter and atthe other end on a tit-:ed part of the structure, and a Weight connectedto said lever and arranged to be held in elevated position by theshutter when the latter isclosed. i

s. 1n a ventilator, the conibination with a framing of a shutter hingedthereto and adapted to open outward therefrom, releasable means forhdlding said shutter against opening movement, and means for openingsaid shutter `when released comprising an ,elbow leverpivoted at itsangle to the inner tace ot the shutter, a vertical track secured to saidframing, one ot the arms ot the lever being arranged to travel on saidtaclr as the shut-ter opens and closes, and a weight carried by theother arm of saidleverand held in elevated position by the engagementot' saidlever and track when the shutter is closed.

5. ln a ventilator, the combination with a framing ot a shutter hingedthereto at. its lower edge and adapted to open outward therefrom,releasable iiieans for holding said shutter against opening.movement,means tor opening said shutter when released comprising an elbow leverpivoted at its angle, to the inner tace ot the shutter, vertical traclrrigidly `secured to said training, one of the arms ot the lever being`arranged to travel on said track as the shatter opens, a weight. carriedby the other arm of said lever and held in elevated position by theleach resting at its loweredge npon said baseboard and hinged thereto,and means for operating said shutters.

7. A ventilator comprising a framing having upright corner posts andcross braces connecting thenpper portions thereof, a roof covering saidframing, a .base board surrounding said framing near the lower ends ofposts, aseries of shutters each hinged at its lower edge to said baseboard and adapted to swing outward from said framing, the vertical edgesof adjacent shutters at the corners of the framing being beveled to meeton the outside of said corner posts When said shut-ters vare closed,means for opening said shutters, and releasable means for holding theshutters against opening movement. l

8. A ventilator comprising a framing composed of upright posts,cross'braces connecting the upper portions thereof, a root covering saidframing, a base board extending around the't'ralning and connecting saidposts near their lower'ends, said baseboard being rabbeted atI the outerside-of its upper edge, a seriesl of shutters each having its lower edgelocated in said rabbet and'hinged to the base board, said shutters beingal'- ranged. to swingoutward from the framing,- and means for openingand closing 'said shutters.

9'. In a ventilator, the combination with e traming of a series ofoutwardly-opening shutters ca-rt'ied thereby and hinged thereto at theirlovte edges, releasable means for holding said shutters against openingmovement, and means for automatically opening said shuttersindependently of one another, when released 10. In a ventilator, thecombination of a framing, a series of shutters carried thereby, meansfor opening said shutters independently ot each' other, means forholding said shutters against opening movement coniprising ropes securedto. the shutters lrespectively, automatic releasing devices adapted todetacliably receive. said ropes, and means for simultaneously operatingsaid vreleasing devices from a plurality ot different points.

1L ln a ventilator, the combination ot' a framing, a series ot shutterscarried therement comprising a series o {eleetrically l framing, "eshutter carried thereby,{1neans v a for opening said shutter, Ineens forholding' operated releasing devices included in a common electriccircuit, w ro` e leading from each shutter to one of sai `1 veleasing-..devices and det-echably secured. to tlie--latter,

' and means for controlling seid electric cirf cuit 'at a. plurality ofdifferent points. 12. ln a ventilator, the combination lofa' ningmovesaid shutterngainst opening movement compi'sing a10pe"`securedthereto and a releas- 15 ing device `adapted to detachablyreceive said rope, and a fusible link included in said Vropendl normallysustaining the tension thereon. y

' In testimony whereof, I haveA hereunto 20 subscribedmy name thistwentieth dey of April, 19o6.- c Y v l`EVERETT D. CHADWICK.

Witnesses:

JOSEPH T. BRENNAN, GASPAR ROGERS.

